Helmut Alt

3.4k total citations · 1 hit paper
55 papers, 1.6k citations indexed

About

Helmut Alt is a scholar working on Computer Graphics and Computer-Aided Design, Computer Vision and Pattern Recognition and Computational Mechanics. According to data from OpenAlex, Helmut Alt has authored 55 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Computer Graphics and Computer-Aided Design, 23 papers in Computer Vision and Pattern Recognition and 15 papers in Computational Mechanics. Recurrent topics in Helmut Alt's work include Computational Geometry and Mesh Generation (30 papers), Digital Image Processing Techniques (13 papers) and Data Management and Algorithms (9 papers). Helmut Alt is often cited by papers focused on Computational Geometry and Mesh Generation (30 papers), Digital Image Processing Techniques (13 papers) and Data Management and Algorithms (9 papers). Helmut Alt collaborates with scholars based in Germany, United States and Austria. Helmut Alt's co-authors include Michael Godau, Carola Wenk, Kurt Mehlhorn, Günter Rote, Alon Efrat, Christian Knauer, Emo Welzl, Hubert Wagener, Otfried Schwarzkopf and Torben Hagerup and has published in prestigious journals such as Journal of the ACM, Electrophoresis and SIAM Journal on Computing.

In The Last Decade

Helmut Alt

55 papers receiving 1.5k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

COMPUTING THE FRÉCHET DISTANCE BETWEEN TWO POLYGONAL CURVES

1995 623 citations Helmut Alt, Michael Godau profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Helmut Alt Germany	17	501	485	464	245	244	55	1.6k
Otfried Schwarzkopf Netherlands	17	509 1.0×	584 1.2×	869 1.9×	198 0.8×	213 0.9×	42	1.8k
Günter Rote Germany	23	337 0.7×	544 1.1×	808 1.7×	198 0.8×	216 0.9×	152	1.8k
Klara Kedem Israel	23	270 0.5×	1.2k 2.5×	744 1.6×	226 0.9×	209 0.9×	79	2.0k
Jorge Stolfi Brazil	22	519 1.0×	1.3k 2.7×	1.4k 3.1×	267 1.1×	534 2.2×	74	3.2k
Godfried Toussaint Canada	22	341 0.7×	558 1.2×	461 1.0×	299 1.2×	107 0.4×	100	1.5k
Sunil Arya United States	18	772 1.5×	1.7k 3.5×	737 1.6×	622 2.5×	353 1.4×	47	3.1k
Hans Hagen Germany	23	164 0.3×	754 1.6×	511 1.1×	161 0.7×	387 1.6×	124	1.6k
Carola Wenk United States	20	724 1.4×	221 0.5×	183 0.4×	151 0.6×	49 0.2×	72	1.6k
John L. Pfaltz United States	14	184 0.4×	1.5k 3.1×	199 0.4×	353 1.4×	78 0.3×	60	2.3k
Zvi M. Kedem United States	20	205 0.4×	720 1.5×	800 1.7×	258 1.1×	490 2.0×	74	2.3k

Countries citing papers authored by Helmut Alt

Since Specialization

Citations

This map shows the geographic impact of Helmut Alt's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Helmut Alt with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helmut Alt more than expected).

Fields of papers citing papers by Helmut Alt

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helmut Alt. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Helmut Alt. The network helps show where Helmut Alt may publish in the future.

Co-authorship network of co-authors of Helmut Alt

This figure shows the co-authorship network connecting the top 25 collaborators of Helmut Alt. A scholar is included among the top collaborators of Helmut Alt based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Helmut Alt. Helmut Alt is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

1.

Ahn, Hee-Kap, et al.. (2020). Middle curves based on discrete Fréchet distance. Computational Geometry. 89. 101621–101621. 4 indexed citations

2.

Alt, Helmut. (2016). Computational Aspects of Packing Problems. Bulletin of the European Association for Theoretical Computer Science. 1(118). 2 indexed citations

3.

Bae, Sang Won, et al.. (2015). Bundling three convex polygons to minimize area or perimeter. Computational Geometry. 51. 1–14. 3 indexed citations

4.

Alt, Helmut, et al.. (2010). Shape matching by random sampling. Theoretical Computer Science. 442. 2–12. 3 indexed citations

5.

Albers, Susanne, Helmut Alt, & Stefan Näher. (2009). Efficient Algorithms: Essays Dedicated to Kurt Mehlhorn on the Occasion of His 60th Birthday. Digital Access to Libraries (Université catholique de Louvain (UCL), l'Université de Namur (UNamur) and the Université Saint-Louis (USL-B)). 16 indexed citations

6.

Alt, Helmut, et al.. (2009). Probabilistic matching of planar regions. Computational Geometry. 43(2). 99–114. 6 indexed citations

7.

Alt, Helmut & Maike Buchin. (2009). Can We Compute the Similarity between Surfaces?. Discrete & Computational Geometry. 43(1). 78–99. 19 indexed citations

8.

Alt, Helmut, Alon Efrat, Günter Rote, & Carola Wenk. (2003). Matching planar maps. Symposium on Discrete Algorithms. 589–598. 20 indexed citations

9.

Alt, Helmut, Alon Efrat, Günter Rote, & Carola Wenk. (2003). Matching planar maps. Journal of Algorithms. 49(2). 262–283. 111 indexed citations

10.

Alt, Helmut. (2001). Computational Discrete Mathematics: advanced lectures. DIAL (Catholic University of Leuven). 7 indexed citations

11.

Alt, Helmut, Stefan Felsner, Ferrán Hurtado, Marc Noy, & Emo Welzl. (2000). A class of point-sets with few k-sets. Computational Geometry. 16(2). 95–101. 3 indexed citations

12.

Alt, Helmut, Michael Godau, & Sue Whitesides. (1998). Universal 3-dimensional visibility representations for graphs. Computational Geometry. 9(1-2). 111–125. 5 indexed citations

13.

Alt, Helmut, David Hsu, & Jack Snoeyink. (1994). Computing the largest inscribed isothetic rectangle. Canadian Conference on Computational Geometry. 67–72. 16 indexed citations

14.

Weber, Gerald, et al.. (1994). An Application of Point Pattern Matching in Astronautics. Journal of Symbolic Computation. 17(4). 321–340. 13 indexed citations

15.

Alt, Helmut, et al.. (1991). Approximate matching of polygonal shapes (extended abstract). 186–193. 42 indexed citations

16.

Alt, Helmut, Rudolf Fleischer, Michael Kaufmann, et al.. (1990). Approximate motion planning and the complexity of the boundary of the union of simple geometric figures. Algorithmica. 8(1-6). 281–289. 1 indexed citations

17.

Mehlhorn, Kurt, Stefan Näher, & Helmut Alt. (1987). A Lower Bound on the Complexity of the Union-Split-Find Problem. SIAM Journal on Computing. 17(6). 1093–1102. 5 indexed citations

18.

Alt, Helmut. (1985). Multiplication is the easiest nontrivial arithmetic function. Theoretical Computer Science. 36. 333–339. 6 indexed citations

19.

Alt, Helmut, Kurt Mehlhorn, & J. Ian Munro. (1981). Partial match retrieval in implicit data structures. Lecture notes in computer science. 19(2). 156–161. 2 indexed citations

20.

Alt, Helmut & Jan Van Leeuwen. (1979). The complexity of complex division (extended abstract).. 13–17. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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